Remember - This is a public forum so never post private information such as email or phone numbers!Ideas:The original message was received at Tue, 19 Oct 2010 11:36:05 -0700from c-69-247-52-120.hsd1.fl.comcast.net [69.247.52.120] ----- The following addresses had permanent fatal errors -----<Email removed for privacy > (reason: 550 Host unknown) ----- Transcript of session follows -----550 5.1.2 <Email removed for privacy >... Host unknown (Name server: kpzngs.com: host not foundPrograms you are having problems with Error messages Recent changes you made to your computer What you have already tried to fix the problem

Outlook Express questions belong in http://social.answers.microsoft.com/Forums/en-US/xpnetwork/threadsBrian Tillman [MVP-Outlook]--------------------------------https://mvp.support.microsoft.com/profile/Brian.TillmanIf a reply helps, please vote it as helpful. If a reply solves the issue, please mark it as an answer.

Is there any way to repair this because every time i send a reply email it send back From Mail Delivery System The original message was received at Tue, 19 Oct 2010 11:36:05 -0700from c-69-247-52-120.hsd1.fl.comcast.net [69.247.52.120] ----- The following addresses had permanent fatal errors -----<Email removed for privacy > (reason: 550 Host unknown) ----- Transcript of session follows -----550 5.1.2 <Email removed for privacy >... Host unknown (Name server: kpzngs.com: host not found)Email removed for privacy was the email i was trying to reply to?

This forum is for site feedback only. As was pointed out, your post belongs here.XP - Networking, Mail And Getting Online Forumhttp://social.answers.microsoft.com/Forums/en-US/xpnetwork/threadsThat said, is Comcast your ISP/Mail Server? Is kpzngs.com actually a mail server? I think not.Bruce HagenMS-MVP Oct. 1, 2004 ~ Sept. 30, 2010Imperial Beach, CA